On Thu, 2015-05-07 at 20:32 -0300, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
>
> 'channels' is allocated via kmemdup and it is never freed.
>
> Use 'indio_dev->channels' directly instead, so that we avoid such
> memory leak problem.
>
> Cc: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> Reported-by: Alexey Khoroshilov <khoroshilov@xxxxxxxxx>
> Signed-off-by: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> ---
> Build-tested only.
>
> Changes since v2:
> - Get rid of the channels and use indio_dev->channels instead.
>
> drivers/iio/light/hid-sensor-prox.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
> index 91ecc46..124a8f8 100644
> --- a/drivers/iio/light/hid-sensor-prox.c
> +++ b/drivers/iio/light/hid-sensor-prox.c
> @@ -253,7 +253,6 @@ static int hid_prox_probe(struct platform_device *pdev)
> struct iio_dev *indio_dev;
> struct prox_state *prox_state;
> struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
> - struct iio_chan_spec *channels;
>
> indio_dev = devm_iio_device_alloc(&pdev->dev,
> sizeof(struct prox_state));
> @@ -272,20 +271,21 @@ static int hid_prox_probe(struct platform_device *pdev)
> return ret;
> }
>
> - channels = kmemdup(prox_channels, sizeof(prox_channels), GFP_KERNEL);
> - if (!channels) {
> + indio_dev->channels = kmemdup(prox_channels, sizeof(prox_channels),
> + GFP_KERNEL);
> + if (!indio_dev->channels) {
> dev_err(&pdev->dev, "failed to duplicate channels\n");
> return -ENOMEM;
> }
>
> - ret = prox_parse_report(pdev, hsdev, channels,
> + ret = prox_parse_report(pdev, hsdev,
> + (struct iio_chan_spec *)indio_dev->channels,
> HID_USAGE_SENSOR_PROX, prox_state);
> if (ret) {
> dev_err(&pdev->dev, "failed to setup attributes\n");
> goto error_free_dev_mem;
> }
>
> - indio_dev->channels = channels;
> indio_dev->num_channels =
> ARRAY_SIZE(prox_channels);
> indio_dev->dev.parent = &pdev->dev;
--
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